What type of lighting is commonly used in traffic signals?

LED (Light Emitting Diode) lighting is the commonly used lighting in traffic signals due to its numerous advantages over other types of lighting. LEDs are highly energy efficient, consuming significantly less power than incandescent or halogen lights. They also have a much longer lifespan, which reduces maintenance costs and the frequency of bulb replacements.

Furthermore, LEDs provide superior visibility and clarity; they can produce bright colors that are easily seen, even in daylight conditions. Additionally, they have a quicker response time, which is crucial for signaling purposes, as they illuminate almost instantly compared to incandescent bulbs, which may take a moment to reach full brightness.

Given these benefits, many municipalities have transitioned to LED lighting in traffic signals, aligning with modern energy-saving initiatives and improving overall traffic management safety.